After the upgrade users can no longer open public folders using Outlook. Instead, they see this error:

The set of folders cannot be opened. Microsoft Exchange is not available . Either there are network problems or the Exchange server is down for maintenance. (/o=DOMAIN/ou=Exchange Administrative Group (....)/cn=Configuration/cn=Servers/cn=MAILSERVER1)

Public folders can still be opened using OWA. We are using Outlook 2010 on the desktop. Any suggestions?

I tried using the new Public Folders Management tool in Exchange Management Console. When I click on a public folder and try to change the settings on it, I get this error:

Microsoft Exchange Error

Action 'Update Content' could not be performed on object '_Blah:SampleFolder'.

2 Answers
2

Okay, sorry to dismiss the earlier Server Fault message--it led me on the right track, at least. I called Dell support and had them walk me through disabling the performance features on the NIC, which resolved the issue. I think the key was disabling global chimney and receive side scaling, as I had tried most of the other steps as per the other Server Fault question posted. Of course none of these settings should cause problems, so maybe it's going to vary from server to server.

I also upgraded the driver version for the NIC, applied a BIOS patch and the latest Windows optional update rollup for Hyper-V issues, including a blue screen issue that we had experienced twice in the last week: KB2264080.

Just tried manually mounting the database. No messages. Checked event log, says the database was successfully mounted. Still getting the same error in Outlook 2010. I'm not sure what you mean about the primary server being unavailable to hand out referrals--can you explain? I have three Exchange Servers, all of them are "available" in the sense that they are turned on, are responding to pings, and seem to be correctly functioning, with the exception of the public folders functionality.
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QuintenNov 1 '10 at 20:37

Also, note that I am still able to access the public folders when I use OWA. It's not a complete failure. OWA is running on my CAS server, separate from the machine that hosts the public folders database. However, they are all on one hyper-v host.
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QuintenNov 1 '10 at 20:39